Optical characterization of photovoltaic materials and structures for thin-film solar cells based on advanced texturization
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Abstract
Advanced texturization is a promising approach to increase the performance of thin-film solar cells. Currently, light trapping schemes implemented in state-of-the-art devices utilize randomly textured interfaces to increase their optical performance. Periodic gratings, however, have the potential to outperform their random counterparts and are thus of great interest for PV applications. In this work, an analysis of the optical performance of different advanced grating concepts applied to thin-film solar cells is presented. Different types of absorber materials were taken into account: amorphous and micro-crystalline silicon, crystalline silicon and Copper-Indium-Gallium-diSelenide chalcopyrite semiconductors.